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More thorough check for (.. 10).x in pretty-printer

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Closes #919
This commit is contained in:
Marijn Haverbeke 2011-09-15 10:59:06 +02:00
parent d0d322ac93
commit 8c83ea564b
1 changed files with 21 additions and 5 deletions
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26
src/comp/syntax/print/pprust.rs
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@ -882,14 +882,11 @@ fn print_expr(s: ps, expr: @ast::expr) {
}
ast::expr_field(expr, id) {
// Deal with '10.x'
alt expr.node {
ast::expr_lit(@{node: ast::lit_int(_), _}) {
if ends_in_lit_int(expr) {
popen(s); print_expr(s, expr); pclose(s);
}
_ {
} else {
print_expr_parens_if_unary_or_ret(s, expr);
}
}
word(s.s, ".");
word(s.s, id);
}
@ -1638,6 +1635,25 @@ fn ast_ty_constrs_str(constrs: [@ast::ty_constr]) -> str {
ret s;
}
fn ends_in_lit_int(ex: @ast::expr) -> bool {
alt ex.node {
ast::expr_lit(@{node: ast::lit_int(_), _}) { true }
ast::expr_binary(_, _, sub) | ast::expr_unary(_, sub) |
ast::expr_ternary(_, _, sub) | ast::expr_move(_, sub) |
ast::expr_copy(sub) | ast::expr_assign(_, sub) | ast::expr_be(sub) |
ast::expr_assign_op(_, _, sub) | ast::expr_swap(_, sub) |
ast::expr_log(_, sub) | ast::expr_assert(sub) | ast::expr_uniq(sub) |
ast::expr_check(_, sub) { ends_in_lit_int(sub) }
ast::expr_fail(osub) | ast::expr_ret(osub) | ast::expr_put(osub) {
alt osub {
some(ex) { ends_in_lit_int(ex) }
_ { false }
}
}
_ { false }
}
}
//
// Local Variables:
// mode: rust